Finding the Fourth Proportional to 151,742.19, 209,372.95 and 87,198.96
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Solution
The fourth proportional to 151,742.19, 209,372.95 and 87,198.96 is: 120,316.59
Step by Step Solution
- Step 1: Write the proportion equation
151,742.19 : 209,372.95 = 87,198.96 : x - Step 2: Convert to fraction form
151,742.19/209,372.95 = 87,198.96/x - Step 3: Cross multiply
151,742.19x = 209,372.95 × 87,198.96 - Step 4: Simplify right side
151,742.19x = 18,257,103,492.13 - Step 5: Solve for x
x = 18,257,103,492.13/151,742.19 - Step 6: Final answer
x = 120,316.59
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.